diff --git a/android/build.gradle b/android/build.gradle
index f0f6041..63ce191 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -37,6 +37,6 @@ android {
 }
 
 dependencies {
-    implementation 'cn.jiguang.sdk:jmessage:2.9.2'
-    implementation 'cn.jiguang.sdk:jcore:2.8.2'
+    implementation 'cn.jiguang.sdk:jmessage:2.9.0'
+    implementation 'cn.jiguang.sdk:jcore-google:2.6.0'
 }
\ No newline at end of file
diff --git a/android/gradle/wrapper/gradle-wrapper.properties b/android/gradle/wrapper/gradle-wrapper.properties
index 888f14f..540462d 100644
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Tue Apr 02 18:21:36 CST 2019
+#Sat Jun 26 16:16:52 CST 2021
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
diff --git a/example/.flutter-plugins-dependencies b/example/.flutter-plugins-dependencies
index bc25b71..7c55b4b 100644
--- a/example/.flutter-plugins-dependencies
+++ b/example/.flutter-plugins-dependencies
@@ -1 +1,3 @@
-{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"image_picker","path":"D:\\\\Workspace\\\\android\\\\flutter\\\\.pub-cache\\\\hosted\\\\pub.flutter-io.cn\\\\image_picker-0.7.5+2\\\\","dependencies":[]},{"name":"jmessage_flutter","path":"D:\\\\Workspace\\\\flutter\\\\jmessage-flutter-plugin\\\\","dependencies":[]},{"name":"modal_progress_hud_nsn","path":"D:\\\\Workspace\\\\android\\\\flutter\\\\.pub-cache\\\\hosted\\\\pub.flutter-io.cn\\\\modal_progress_hud_nsn-0.1.0-nullsafety-1\\\\","dependencies":[]},{"name":"video_thumbnail","path":"D:\\\\Workspace\\\\android\\\\flutter\\\\.pub-cache\\\\hosted\\\\pub.flutter-io.cn\\\\video_thumbnail-0.3.3\\\\","dependencies":[]}],"android":[{"name":"flutter_plugin_android_lifecycle","path":"D:\\\\Workspace\\\\android\\\\flutter\\\\.pub-cache\\\\hosted\\\\pub.flutter-io.cn\\\\flutter_plugin_android_lifecycle-2.0.1\\\\","dependencies":[]},{"name":"image_picker","path":"D:\\\\Workspace\\\\android\\\\flutter\\\\.pub-cache\\\\hosted\\\\pub.flutter-io.cn\\\\image_picker-0.7.5+2\\\\","dependencies":["flutter_plugin_android_lifecycle"]},{"name":"jmessage_flutter","path":"D:\\\\Workspace\\\\flutter\\\\jmessage-flutter-plugin\\\\","dependencies":[]},{"name":"modal_progress_hud_nsn","path":"D:\\\\Workspace\\\\android\\\\flutter\\\\.pub-cache\\\\hosted\\\\pub.flutter-io.cn\\\\modal_progress_hud_nsn-0.1.0-nullsafety-1\\\\","dependencies":[]},{"name":"video_thumbnail","path":"D:\\\\Workspace\\\\android\\\\flutter\\\\.pub-cache\\\\hosted\\\\pub.flutter-io.cn\\\\video_thumbnail-0.3.3\\\\","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[{"name":"image_picker_for_web","path":"D:\\\\Workspace\\\\android\\\\flutter\\\\.pub-cache\\\\hosted\\\\pub.flutter-io.cn\\\\image_picker_for_web-2.0.0\\\\","dependencies":[]}]},"dependencyGraph":[{"name":"flutter_plugin_android_lifecycle","dependencies":[]},{"name":"image_picker","dependencies":["flutter_plugin_android_lifecycle","image_picker_for_web"]},{"name":"image_picker_for_web","dependencies":[]},{"name":"jmessage_flutter","dependencies":[]},{"name":"modal_progress_hud_nsn","dependencies":[]},{"name":"video_thumbnail","dependencies":[]}],"date_created":"2021-06-01 11:58:00.043626","version":"2.2.0"}
\ No newline at end of file
+
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"image_picker","path":"/Users/macbookpro/works/study/flutter config/flutter/.pub-cache/hosted/pub.dartlang.org/image_picker-0.6.7+22/","dependencies":[]},{"name":"jmessage_flutter","path":"/Users/macbookpro/works/company/wehouse/jmessage_google/","dependencies":[]}],"android":[{"name":"flutter_plugin_android_lifecycle","path":"/Users/macbookpro/works/study/flutter config/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_plugin_android_lifecycle-1.0.11/","dependencies":[]},{"name":"image_picker","path":"/Users/macbookpro/works/study/flutter config/flutter/.pub-cache/hosted/pub.dartlang.org/image_picker-0.6.7+22/","dependencies":["flutter_plugin_android_lifecycle"]},{"name":"jmessage_flutter","path":"/Users/macbookpro/works/company/wehouse/jmessage_google/","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"flutter_plugin_android_lifecycle","dependencies":[]},{"name":"image_picker","dependencies":["flutter_plugin_android_lifecycle"]},{"name":"jmessage_flutter","dependencies":[]}],"date_created":"2021-06-26 16:22:31.198487","version":"2.2.0"}
+
diff --git a/jmessage_flutter.iml b/jmessage_flutter.iml
index 67bc1b3..d194aa7 100644
--- a/jmessage_flutter.iml
+++ b/jmessage_flutter.iml
@@ -22,5 +22,6 @@
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" name="Dart SDK" level="project" />
     <orderEntry type="library" name="Flutter Plugins" level="project" />
+    <orderEntry type="library" name="Dart Packages" level="project" />
   </component>
 </module>
\ No newline at end of file